diff --git a/app/services/letzshop/order_service.py b/app/services/letzshop/order_service.py
index 2b98a294..11929600 100644
--- a/app/services/letzshop/order_service.py
+++ b/app/services/letzshop/order_service.py
@@ -711,6 +711,10 @@ class LetzshopOrderService:
                     self.create_order(vendor_id, shipment)
                     stats["imported"] += 1
                 except Exception as e:
+                    # Rollback session to clear any partial changes from failed order
+                    # This is crucial because create_letzshop_order may have flushed
+                    # the order before the exception was raised (e.g., product not found)
+                    self.db.rollback()
                     stats["errors"] += 1
                     stats["error_messages"].append(
                         f"Shipment {shipment_id}: {str(e)}"